Rim-fastening for split pulleys.



J. A. BRlED.

RIM FASTENING FOR SPLIT PULLEYS.

APPLICATION FILED JULY24, 1915.

1,169,233. Patented Jan. 25, 1916.

2 SHEETS-SHEET 1.

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[I ll WITNESS Fg 4 4 M A TTORNE Y5.

"rm: COLUMBIA PLANOGRAPH (20., WASHINGTON. D. C.

I. A. BRIED.

RIM FASTENING FOR SPLIT PULLEYS.

APPLICATION FILED 1uw24. 1.9!5.

1,169,233. Patented Jan. 25, 1916.

2 SHEETSSHEET 2.

""1112; I I I WITNESS I dlvl/gr m A TTORIVEI S THE COLUMBIA PLANOGRAPH CO" WASHINGTON u c unrrnn srarns Parana curios.

JULIEN A. nInn, or OA LAN CALIFORNIA.

' RIM-FASTENING FOB SPLIT. PULLEYS.

Application rues Jui 24, 1315. j Serial No. 41,877.

To all whom it may concern: I

Be it known that I, JULIEN A. Benin, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Rim-Fae tenings for Split Pulleys, of which the following is a specification. I L

Divided pulleys have heretofore been united at the rim by suitable angle members connected by bolts or the like, and which are positioned intermediate to the spokes of the wheel. The assembling of these structures requires great care in maintaining perfect alinement of the rim and obtaining a tight jointbetween the rim sections, and in structures of this typefwhen rotated at high speed, the outward pressure on the rim at the connected joint occasioned by the centrifugal force .ofthe rotation of the pulley at high speed, causes the'unsupported joint to break and the pulley to fly apart, causing great damage. a j

The present invention has for its principal object to overcome the objections present in the divided pulleys now universally in use, and to provide one wherein a support is provided for the joined ends of the rim; one which is capable of being easily and quickly assembled or dismantled, and which does not require the services of a skilled mechanic in so doing; and one in which the joint union of the rim sections is located in close proximity to the supporting spokes, thereby overcoming the bulging of the pulley on the rotation of the earnest high speed, and one whereby the surfaces of the cooperatingrim sections are, forced into alinement on the making of the joint union therebetween. I

The invention consists broadly in dividing the, pulley rim transversely andpreferably at a point adjacent opposite spokes and attaching to the free end of the rim an angle iron or other suitable portion, securing the angle iron or other suitable portion to the spoke by any suitable means which will draw the ends of the rim together and aline its surfaces. 1

With the above mentioned and other objects in view, the invention. consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings and pointed out in j the claims hereto appended; itbeing understood that various changes in the form,

Specification of Letters Patent.

. Patented Jane's, rare.

proportion, size and minor details of construction within the scope of the claims may be resorted to without departing'from the SPIIiiJ or sacrificing any of the advantages of the invention.

Tomore fully comprehend the invention, reference is directed to the accompanying drawings, whereini Figure 1 is a view in side elevation of a divided pulley with an embodiment of my invention uniting the sections. Fig. 2is a view in elevation of the pulley partly broken away, disclosing the angle iron carried by the free portion of the rim, the

flanged extension on the spoke and the bolts uniting the members together. Fig. 3 is a sectional View taken on line 33 of Fig. 2, disclosing the beveled" joint between the 'angle iron and spoke. Fig. 4 is a transverse SGGtlOl'lttl view taken on line &i of Fig. 3. F 1g. 0 1s a transverse SQCtlQIlZLl view of a pulley having a crown face, disclosing the 7 angle members formed in sections.v Figs.

6, 7, 8 and 9are views'in sections of several forms of structures, wherein the joint is a slight departure from the preferred form.

Referring more particularly to the several views of the drawings, wherein like characters of reference designate corresponding parts.l indicates the spokes of a pulley radiating from a-divided hub 2, the sections" of whichare joined together by the bolts 3 which may also'assistin clamping the hub about its supporting shaft. The

spokes l and hub 2 are preferably of cast metal. and extending from the opposite sides of the end of the spokes are the integral laterally extending spoke flanges 3, to which are secured, preferably by therivets 4, the steel rim 5, which is preferably divided transversely on the opposite sides of, theends of certain diametrically opposite lspokes to enable the pulley to be clamped 1 about a shaftand to provide a balanced structure. For clearness, the spoke flanges are hereinafter included in the spokes in the remainder of the specifications and in the claims. I

In the preferred form, the cooperating faces of certain diametrically opposite spokes lie in a plane parallel to the axis of the pulley and converge outwardly with the radius of the spoke. The portion of the rim 5 secured to the beveled spokes overhangs the beveled surface forming a lip 7 which provides an abutment or stop for the angle irons or flanges 8 secured by rivets 10 to the free portions of the rim and extending preferably for the full length thereof. Suitable apertures 12 and 13 are formed respectively in the angle iron and spoke, and through the same extend the bolts 14:, preferably of a diameter smaller than the aper tures. Suitable nuts 15 fitted to the bolts draw the beveled faces of the angle irons againstthe beveled faces of the spokes,'and in so doing force the upper surface of the angle iron beneath and tightly in contact with the under surface of the overhang or lip 7 of the rim and draw the coeperating edges of the rim toward each other with the outer surfaces thereof in alinement. In this construction it is only necessary in clamping the pulley around a shaft to properly assemble the same andthe tightening of the nuts 15 will automatically draw the beveled edges and angle irons together against each other and the angle of the bevel will tightly force theupper surface of the angle iron against the under surface of the overhang or lip 7. The clamping action in this structure is approximately at right angles to the" centrifugal force of the wheel when revolving,

and at a point where the spokes form one member, andthe overhang or 11p 7 provldes a stop or retaining means for thejoutward tendency of the angle iron.

In Fig. 5 the angle iron instead of being continuous is formed in a plurality of sec- 1 tions 16 which are secured to the rim by the rivets 10 and such structure isjparticularly adapted for pulleys having crowned surfaces, as it obviates the necessity of forming continuous angles to the crown of the pulley. p

In the form d'isclosed'in Fig. 6 the cooperating faces of the flange and spoke are beveled outwardlyin a direction from the outer central portion of the spoke, as at18 and 19, and the portion of the rim secured to the spoke terminates short of the side edge thereof providing a seat 20 on which is adapted to rest the overhanging portion 21 of the rim projected beyond the face of the flange. In assembling this structure the tightening of the nut 15 draws the beveled face 18 of the flange downwardly on the beveled face 19" of the spoke and seats the overhanging portionr2l of the rim on the seat 20, thus alining the coeperatingen'ds of the rim. i

In Fig. 7 the construction is substantially the same as in the preferred. form with the 3 exception that the coeperating faces of the spoke and angle iron are arranged 1n a plane parallel to the center line of the spoke and the meeting edges of the rim are formed with 'coeperating beveled surfaces 22 and 23 and I the action thereof, when drawn togetherby 6; the nut 15, is to aline the rim sections and draw the angle iron tightly against the undersurface of the overhanging portion of the rim securedto the spoke. V

The structures disclosed in Figs. 8 and 9 are very similar with the exception that in the structure in Fig. 9 the retaining bolt fits snugly into the apertures formed in the angle iron and spoke and these apertures are 'boredor machined in such manner as to insure an exact aliningof the meeting ends of the sections, and in'Fig. 8 the retaining bolt fits loosely into the apertures, and dowels 2% guide the parts intotheir proper position with the coeperating end sections of the rim in alinement.

In the various forms of the'invention it will be apparent that the rim joint is made' Having thus described the invention, I

claim 1. A. joint for divided pulleys comprising rim supporting spokes, a divided rim, the coeperating ends of which terminate adjacent to one of the rim supporting spokes, and one of said ends overhanging theside face of said spoke, an attaching means carried by the co'o'perating end projecting beyond the end thereof for engagement under the overhanging end secured to said spoke, and means for detachably securing said attaching means to saidspoke.

2. A joint for divided pulleys comprising rim supporting spokes,xcoeperating rim sect'ions,the coeperating ends of certain of said sections terminating adjacent to one of the rim supporting spokesand theend ofone of said coeperating sections overhanging the side face of said spoke and secured thereto,

an attaching member secured to the other of said coeperating rim sections and projecting beyond the end thereof and adapted when in position to engage under. the overhanging portion of said c'oe'perating rim sections and 'meansfor detachably securing said attachsaid rim being in staggered relation to the "meeting surfaces of said attaching member and spoke.

3. A joint for divided pulleys comprising rim supportingspokes, coeperating'rim sectionswith the coeperating ends of certain of said sections terminating adjacent to one of the rim supporting spokes and the end of one "of said coeperating sections secured to said 'spoke,'an"attachmg member carried by the mgmember to said spoke with the coeper-r end of the other coiiperating rim section for engaging theside face of the spoke, the engaging faces of the attaching member and spoke being correspondingly beveled to aline the outer surface of the rim sections when drawn together, and means for detachably securing the attaching member to the spoke with their faces in meeting relation.

4. A joint for divided pulleys comprising rim supporting spokes, a rim divided into sections with the ends of the sections terminating adjacent to certain of the rim supporting spokes and certain ends of said sections secured to said spokes, an attaching 15 member carried by the other end of said sections for engaging the side faces of the spoke to which the end of a cooperating section is secured, the engaging faces of said attaching member and cooperating spoke lying in a plane parallel to the axis of the pulley and converging outwardly With the radius of the said spoke, and means for detachably securing said attaching member to its cooperating spoke.

In testimony whereof I have signed my name to this specification in the presence of a subscribing Witness.

J ULIEN A. BRIED. Witness:

D. B. RICHARDS.

Copies of this patent may .be obtained for five cents each, byv addressing the "Commissioner of Patents,

Washington, D. C." 

